Show:
Parallel Lines
Angles
Vocabulary
Perpendicular Lines
Line Segments
100

What is the first step in making a pair of parallel lines?

Draw a transversal line through through the line and the given point not on the line.

100
To divide an angle in half is...
An angle bisector.
100

The tool used to make circles and arcs.

compass

100

A line that divides another line in half.

perpendicular bisector

100

Two line segments that have the same length.

congruent line segments

200

Two lines that never intersect.

parallel

200
How can you construct a right angle?
Drawing a perpendicular line.
200

Definition of a Construction

To draw shapes, angles, or lines accurately

200

Where does a perpendicular bisector cross a line segment?

At its midpoint.

200
The first step to drawing a segment bisector is...
Place the pin at one end of the line, and the pencil more than halfway.
300

How many arcs are made after constructing a pair of parallel lines?

2

300
Where is the compass placed when drawing a 45 degree angle?
The point of intersection.
300

Tool used to keep lines straight when making constructions.

straight edge

300
How far must the compass extend to construct a perpendicular bisector?
More than half way.
300
Where do you draw the arcs for a segment bisector?
Above and below the line.
400
How many straight lines should be drawn to construct parallel lines?
3
400
True or False? Start constructing an angle with a line segment.
True.
400
Two lines that never intersect.
What are parallel lines?
400
What do you need to find a perpendicular line of a given line?
A point on the line and a point where you want the line to be.
400
Is it possible to construct congruent line segments using only a straight edge?
No, it is not possible.
500
Generally explain how to construct a line parallel to a point not on the line.
Draw a line and construct an arc from it. Then copy the angle to the point not on the line.
500
Explain the steps of an angle bisector construction...
Make an arc from the vertex that intersects both rays. From each point, make an "X" using the same compass width, then connect the vertex to the "X" with a straightedge.
500

Two lines that meet at a right angle.

perpendicular lines

500
Explain the steps of constructing a perpendicular bisector.
From each endpoint, the compass should measure more than halfway between them, make an arc above and below the line, draw the intersection from the points.